Related Questions

A pipe fills a tank in P minuties and another pipe fills the tank in Q minutes. A different pipe makes the tank empty in R minutes. If all these three pipe are opened then in how many minutes the tank will be full?
A p+q-qpqr
B pq+pr-pqpqr
C pq+qr-prpqr
D pqrqr+pr-pq
A tank is filled by three pipes with uniform flow. The first two pipes operating simultaneously fill the tank in the same time during which the tank is filled by the third pipe alone. The second pipe fills the tank 5 hours faster than the first pipe and 4 hours slower than the third pipe. The time required by the first pipe is:
A 6 hours
B 10 hours
C 15 hours
D 30 hours
In each of the questions 20-21 , there are two quantities : Quantity A and Quantity B. You are to compare those quantities . Quantities A 5 (a-7) Quantity B 5a - 7
A Quantity A is greater
B Quantity B is greater
C Both quantities are equal
D It is impossible to determine
Two pipe systems can be said to be equivalent, when the following quantities are same
A Friction loss and flow
B Length and diameter
C Flow and length
D Friction factor and diameter
One pipe can fill a tank three times as fast as another pipe. If together the two pipes can fill the tank in 36 minutes, then the slower pipe alone will be able to fill the tank in :
A 81 min
B 108 min
C 144 min
D 192 min
Pipe A can fill an empty cistern in 4 hours while along with Pipe B it can fill it up in 3 hours. Only Pipe A is turned on for an hour after which Pipe B is also turned on. How much total time will it take to fill up the cistern?
A 3 hrs 20 min
B 3 hrs 25 min
C 3 hrs 15 min
D 3 hrs
Pipe A alone can fill a tankin 8 hours .Pipe B can fill it in 6 hours . If both the pipes are operated and after 2 hours pipe A is closed, then the other pipe will fill the tank in.
A 6 hours
B 3 1/2 hours
C 4 hours
D 1 1/2 hours
A water tank with 64-gallon capacity is filled by pipe A and emptied by pipe B. If the rate of water flow through pipe A is 2 gallons per hour, how many gallons per hour should flow through pipe B so that when both pipes are open, the initially empty tank shold be full in exactly 96 hours?
A 3/8
B 4/3
C 2/3
D 8/3
A Thevenin ac equivalent circuit always consists of an equivalent ac voltage source and an equivalent capacitance.
A True
B False
Norton's theorem provides a method for the reduction of any ac circuit to an equivalent form consisting of an equivalent voltage source in series with an equivalent impedance.
A True
B False

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